Recent Developments of Electrical Drives - Part 40 pot

... the effective value of the e.m.f. using a full-pitch winding. The result will be also an increase of the harmonic content of the e.m.f. The ideal e.m.f. waveform is an 120 electrical degrees trapezoidal ... control of thegenerator, Grid Power Converter Figure 1. Direct-drive wind turbine system with PM synchronous generator. Figure 2. Generator’s topology. Figure 3. The back-to-back...

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... is available from the Library of Congress. ISBN-10 1-4 02 0-4 53 4-4 (HB) ISBN-13 97 8-1 -4 02 0-4 53 4-9 (HB) ISBN-10 1-4 02 0-4 53 5-2 (e-book) ISBN-13 97 8-1 -4 02 0-4 53 5-6 (e-book) Published by Springer, P.O. ... 83 v Recent Developments of Electrical Drives Best papers from the International Conference on Electrical Machines ICEM’04 Edited by S. Wi...

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... presented a view of one of these motors. I-12. Optimization of Linear Brushless DC Motor Drive 135 -0 .01 -0 .008 -0 .006 -0 .004 -0 .002 0 0.002 0.004 0.006 0.008 0.01 -8 -6 -4 -2 0 2 4 6 8 x 10 -3 Figure ... efficiency is about 50% if it is assumed that the joule losses are predominant. -1 -0 .5 0 0.5 1 -1 -0 .8 -0 .6 -0 .4 -0 .2 0 0...

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... (eds.), Recent Developments of Electrical Drives, 141–153. C  2006 Springer. II-1. High-Frequency Position Estimators 143 Figure 1. Magnetizing characteristicwith i mo and φ mo the average modulusof ... and Ren´e K. Boel Electrical Energy Laboratory (EELAB), Department of Electrical Energy, Systems and Automation (EESA), Ghent University (UGent), Sint-Pietersnieuwstraat 41, B-...

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... torque-speed en- velope with maximum-torque-per-stator-current operation range below the base speed as well as constant-powerflux-weakening andmaximum-torque-per-stator-flux operationregions above thebase speed. ... fol- lows. In “IPMSM Design for Wide-Speed Operation,” the double-layer IPM-rotor de- sign is adopted for IPMSMs requiring a wide torque-speed envelope. In “DTC of VSI- fed IPMSM...

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... location of the maximal tooth excitation de- pends on the direction of rotation. In case of right-hand rotation the highest excitation S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical ... II-7. COMPARISON OF STATOR- AND ROTOR-FORCE EXCITATION FOR THE ACOUSTIC SIMULATION OF AN INDUCTION MACHINE WITH SQUIRREL-CAGE ROTOR C. Schlensok and G. Henneberger I...

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... excitations Type of excitation Rotational direction Stator-teeth Left-hand Rotor-teeth Right-hand Stator-teeth Right-hand Rotor- and stator-teeth Right-hand values are positioned on the side of the mounting-plate. ... Deformation of the entire machine in the case of pure stator-teeth excitation, real part. II-7. Comparison of Stator- and Rotor-Force Excitation 221 Figure 14. Struc...

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... 2,280 2-3 D x 2,808 x 2, 740 3-2 D 6,208 6,169 6,395 6,280 3-3 D x 7,155 x 6,930 Cyl 2 2-2 D 756 824 799 742.6 2-3 D x 1,454 x 1,350 3-2 D 2,102 2,295 1,899 2,060 3-3 D x 3,752 x 3,470 4-2 D 3, 940 4,301 ... results: modes 2-2 D, 3-2 D, 4-2 D and modes 2-3 D, 3-3 D, 4-3 D. Table 4. Results for the sleek cylinders Natural frequencies (Hz) Mode Analytical la...

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... range of airgap flux control to reduce or increase its value, this is made with low requirement of d-axis current. r This particular configuration allows us to control the level of excitation of the ... made over iron mostly. S. Wiak, M. Dems, K. Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 321–334. C  2006 Springer. III-1.3. Axial Flux Surface Mounted PM Machin...

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... Kom ˛ eza (eds.), Recent Developments of Electrical Drives, 361–373. C  2006 Springer. III-2.1. Performance Analysis of DFTSCIG 363 Therefore,the mechanical frequencyof the shaft of the machineinhertz ... development of several alternatives of gearless electrical generators that operate at variable speeds. One of these alternatives consists of a Doubly Fed Twin stator...

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